Blocking Technologies

Blocking as a way of stopping child sexual abuse material

Blocking Technologies

Blocking works on the Internet Service Provider (ISP) level of the internet – that is, where data travels through providers’ networks. Blocking technologies can pick up and block domains and URLs that are known to contain online child sexual abuse material. However, these technologies cannot be used on other parts on the internet, such as the Darknet, social media networks and traditional emails. They can also not pick up content that has been encrypted.

1. DOMAIN NAME SERVER (DNS) BLOCKING

Also known as DNS poisoning, this is the most common way to block online child sexual abuse material on ISP level.

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2. DEEP PACKAGE INSPECTION (DPI)

This technology has the capability to look at all the traffic that flows through the ISPs networks, and in contrast to DNS Blocking …

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3. URL BLOCKING

Instead of scrutinising all data, this technology looks at specific pages that have been put on a blocking list …

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4. PROXYS AND FIREWALLS

The advantage of this technology is that it is possible, both theoretically and technologically, to look at encrypted material.

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5. BLOCKING IN THE OPERATORS’ ROUTER

This is a cheap and simple solution, however also one of the more heavy-handed solutions that will block all pages on the ip-address …

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Blocking is needed

Although encryption is being used more and more, and despite what could be construed as narrow perimeters, blocking covers a large part of the Internet and is very important in the fight to combat the spread of online child sexual abuse images, and the re-victimisation that happens every time an image or film is shared. Large amounts of child sexual abuse material is still stored, shared and distributed through the open internet and unencrypted websites.

About the Techincal Model National Response

Inspired by the WeProtect Global Alliance Model we have set out to develop an initiative that looks at technology. We call it the Technical Model National Response.  It is presenting the existing technologies that need to be applied by different sectors and businesses to effectively fight the spread of child sexual abuse material.

Learn about the other
technologies

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    Blocking - Technical Model National Response

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